Hi,
I'm testing Designer 5.9, and found that my process that is designed with 5.8, is not correctly shown.
It has 2 subprocesses, but the first sub-process's flow is not shown,
and if I save this, the flow definition is disappeared from the file also.
I attatched two images: first is the correct one, second is the one that is shown with 5.9.
[attachment=1]proc_image_org.PNG[/attachment]
[attachment=0]proc_image_new.PNG[/attachment]